After the current plot runs its course my Acolytes in my Dark Heresy game will be taking a short trip on a Raider-class vessel dropping them off at a Hive World. This trip will only take one session to play, and is meant to be kind of a breather, a good place for the characters to unwind and hopefully do a bit of Roleplaying (which is like pulling teeth, I tell you). The ship is one that is a part of our Rogue Trader game, so it's kind of a cameo.
So I find myself in need of enough interesting things to happen during the trip to keep everyone interested.
I have a few of the basics down, like 'state dinner with the Captain and senior staff' spending evening drinking in the Officer's Cantina, and just being bored in their cabin. Along with encounters with an interesting NPC for each Acolyte, like the horrible mutated Navigator for the Sororitas, The Veteran Armsman for the Arbitrator, and so on.
So I call upon the minds of the Rogue Trader board, what neat/interesting/cool non-combat events can you think up?